An optical scanning unit, includes a light source having a plurality of
light emitting sources, a vibration mirror part configured to
reciprocatingly scan a light beam emitted from the light source where a
torsion bar is a rotational axis, and a recording control part configured
to output image information for modulating the light emitting source as
corresponding to a scan operation of the vibrating mirror part. Image
information corresponding to one line to be recorded is shared by the
light sources so that image recording is implemented.